Tornado Warnings in Pennsylvania, 2026

By month

28 of 100 tornado warnings covering Pennsylvania in 2026 had a tornado report inside them; 41 of 57 tornado reports fell inside a warning, on average 10 minutes after it went out.

Pennsylvania, 2026

Each office's whole area, 2026

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

• Westmoreland County9
• Warren County6
• Lawrence County6
• Clearfield County6
• Beaver County6
• Potter County6
• Centre County6
• McKean County5
• Jefferson County5
• Crawford County5
• Tioga County5
• Elk County5
• Allegheny County4
• Washington County4
• Bedford County4
• Somerset County4
• Perry County4
• Fayette County4
• Clarion County4
• Butler County4
• Clinton County4
• Lancaster County4
• Chester County4
• Delaware County4
• Wayne County4
• Cambria County3
• Cumberland County3
• Dauphin County3
• Venango County3
• Indiana County3
• Sullivan County3
• Cameron County3
• Mercer County2
• Forest County2
• Lycoming County2
• Montgomery County2
• Blair County2
• Bradford County2
• Greene County1
• York County1

1. June 14, 202614tornado warnings
2. September 3, 202611tornado warnings
3. July 18, 202610tornado warnings
4. July 21, 202610tornado warnings
5. September 1, 20266tornado warnings
6. March 11, 20264tornado warnings
7. June 22, 20264tornado warnings
8. July 5, 20264tornado warnings
9. September 2, 20264tornado warnings
10. July 28, 20263tornado warnings
11. August 2, 20263tornado warnings
12. August 16, 20263tornado warnings

Alerts in force nowTornadoes on recordThe radar archive2025

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.